The fact that it is a male with a straight termen ( outer margin ) is sufficient to id it. The male of C. lila have the forewing termen convex. ( Note in male, the abdominal tip is truncated : in female the tip is tapered to a point.) Additional clues are the width of the "empty" space between the discal and postdiscal spots compared to the submarginal area ( muchwider in C. lila ) and the larger tornal black spot on the hindwing.